Moxa Technologies NPort 5600 Max connection, Setting Factory Default Necessity Required

NPort 5600 Series User’s Manual		Configuring NPort Administrator
	Inactivity time
	Setting	Factory Default	Necessity
	0 to 65535 ms	0 ms	Optional

0 ms: TCP connection is not closed due to an idle serial line.

0-65535 ms: NPort automatically closes the TCP connection if there is no serial data activity for the given time. After the connection is closed, NPort starts listening for another host’s TCP connection.

This parameter defines the maintenances status as Closed or Listen on the TCP connection. The connection is closed if there is no incoming or outgoing data through the serial port during the specific Inactivity time.

If the Inactivity time is set to 0, the current TCP connection is kept active until a connection close request is received. Although Inactivity time is disabled, the NPort will check the connection status between the NPort and remote host by sending “keep alive” packets periodically. If the remote host does not respond to the packet, NPort assumes that the connection was closed down unintentionally. NPort will then force the existing TCP connection to close.

ATTENTION

The Inactivity time should at least be set larger than that of Force transmit timeout. To prevent the unintended loss of data due to the session being disconnected, it is highly recommended that this value is set large enough so that the intended data transfer is completed.

Max connection

Setting	Factory Default	Necessity
1, 2, 3, 4	1	Required

Max connection is usually used when the user needs to receive data from different hosts simultaneously. The factory default only allows 1 connection at a time.

Max. connection 1:

NPort only allows 1 host to open the TCP connection to the specific serial port.

Max connection 2 to 4:

Allows 2 to 4 host’s TCP connection request to open this NPort serial port, at the same time. When multiple hosts establish a TCP connection to the specific serial port at the same time, NPort will duplicate the serial data and transmit to all of the hosts. Ethernet data is sent on a first-in-first-out basis to the serial port when data comes into NPort from the Ethernet interface.

Ignore jammed IP

Setting	Factory Default	Necessity
No or Yes	No	Required

For previous versions of NPort 5200, when Max connections > 1, and the serial device is transmitting data, if any one of the connected hosts was not responding NPort 5200 would wait until the data had been transmitted successfully before transmitting the second group of data to all hosts. For the current version of NPort 5200, if you select Yes for “Ignore jammed IP,” the host that is not responding will be ignored, but the data will still be transmitted to the other hosts.

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